storage: Add support for db_preallocation

Change-Id: I6f9f46b2c00e29d108d9f943b54e2205844ef973

manifests/storage/server.pp

@@ -79,6 +79,11 @@
 #   all times. This option affects only <type>-server processes.
 #   Defaults to $facts['os_service_default'].
 #
+# [*db_preallocation*]
+#   (optional) Preallocate disk space with SQLite database to decrease
+#   fragmentation.
+#   Defaults to $facts['os_service_default'].
+#
 # [*servers_per_port*]
 #   (optional) Spawn multiple servers per device on different ports.
 #   Make object-server run this many worker processes per unique port of
@@ -296,6 +301,7 @@ define swift::storage::server(
   $disable_fallocate                                     = $facts['os_service_default'],
   $fallocate_reserve                                     = $facts['os_service_default'],
   $server_fallocate_reserve                              = $facts['os_service_default'],
+  $db_preallocation                                      = $facts['os_service_default'],
   $servers_per_port                                      = $facts['os_service_default'],
   $user                                                  = undef,
   $workers                                               = $facts['os_workers'],
@@ -480,6 +486,7 @@ define swift::storage::server(
   case $type {
     'account': {
       $type_opts = {
+        'DEFAULT/db_preallocation'        => {'value'  => $db_preallocation},
         # account-server
         # account-auditor
         # account-replicator
@@ -511,6 +518,7 @@ define swift::storage::server(
     }
     'container': {
       $type_opts = {
+        'DEFAULT/db_preallocation'          => {'value'  => $db_preallocation},
         'DEFAULT/allowed_sync_hosts'        => {'value'  => join($::swift::storage::container::allowed_sync_hosts, ',')},
         # container-server
         # container-auditor

releasenotes/notes/db_preallocation-4226028636c46c4d.yaml

@@ -0,0 +1,5 @@
+---
+features:
+  - |
+    The new ``swift::storage::server::db_preallocation`` parameter has been
+    added.

spec/defines/swift_storage_server_spec.rb

@@ -98,6 +98,7 @@ describe 'swift::storage::server' do
         is_expected.to contain_swift_account_config('DEFAULT/log_statsd_sample_rate_factor').with_value('<SERVICE DEFAULT>')
         is_expected.to contain_swift_account_config('DEFAULT/log_statsd_metric_prefix').with_value('<SERVICE DEFAULT>')
 
+        is_expected.to contain_swift_account_config('DEFAULT/db_preallocation').with_value('<SERVICE DEFAULT>')
         is_expected.to contain_swift_account_config('account-auditor/').with_ensure('present')
         is_expected.to contain_swift_account_config('account-auditor/log_name').with_ensure('absent')
         is_expected.to contain_swift_account_config('account-replicator/').with_ensure('present')
@@ -287,6 +288,7 @@ describe 'swift::storage::server' do
         is_expected.to contain_swift_container_config('DEFAULT/log_statsd_sample_rate_factor').with_value('<SERVICE DEFAULT>')
         is_expected.to contain_swift_container_config('DEFAULT/log_statsd_metric_prefix').with_value('<SERVICE DEFAULT>')
 
+        is_expected.to contain_swift_container_config('DEFAULT/db_preallocation').with_value('<SERVICE DEFAULT>')
         is_expected.to contain_swift_container_config('DEFAULT/allowed_sync_hosts').with_value('127.0.0.1')
         is_expected.to contain_swift_container_config('container-auditor/').with_ensure('present')
         is_expected.to contain_swift_container_config('container-auditor/log_name').with_ensure('absent')